Core & Main (NYSE: CNM) director Susan Hardwick files initial ownership report

Rhea-AI Filing Summary

Core & Main, Inc. director Susan M. Hardwick filed an initial statement of beneficial ownership of the company’s securities. This Form 3 filing establishes her status as a reporting insider of Core & Main, with no transactions reported in the provided data.

Key Terms

Form 3, reporting person, derivativeSummary, Rule 10b5-1

4 terms

Form 3 regulatory

"INSIDER FILING DATA (Form 3)"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

reporting person regulatory

""reportingPersons": [ { "name": "Hardwick M Susan""

derivativeSummary financial

""derivativeSummary": []"

Rule 10b5-1 regulatory

"Footnotes may reference Rule 10b5-1 trading plans"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

Understanding Insider Trading Forms →

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Hardwick M Susan

(Last) (First) (Middle)

C/O CORE & MAIN, INC.

1830 CRAIG PARK COURT

(Street)

ST. LOUIS MISSOURI 63146

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
04/01/2026

3. Issuer Name and Ticker or Trading Symbol
Core & Main, Inc. [ CNM ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

No securities beneficially owned. Exhibit list: Ex. 24 - Power of Attorney

No securities are beneficially owned.

	/s/ Jackie Burkhardt, as Attorney-in-Fact for M. Susan Hardwick	04/02/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What does the Core & Main (CNM) Form 3 filing by Susan M. Hardwick mean?

The Form 3 shows Susan M. Hardwick is now a reporting insider of Core & Main. It is an initial statement of beneficial ownership, establishing disclosure obligations for future trades in CNM securities.

Did Susan M. Hardwick buy or sell Core & Main (CNM) shares in this Form 3?

No transactions are reported in this Form 3 for Susan M. Hardwick. The filing is administrative, formally registering her insider status rather than documenting any recent share purchases or sales.

What role does Susan M. Hardwick have at Core & Main (CNM)?

Susan M. Hardwick is identified as a director of Core & Main. As a director and reporting person, she must disclose her beneficial ownership and future changes in CNM holdings through SEC forms.

Why is a Form 3 important for Core & Main (CNM) investors?

Form 3 signals that an individual has become a reporting insider at Core & Main. It sets a transparency baseline so investors can later track any changes in that insider’s CNM ownership through subsequent SEC filings.

Does this Core & Main (CNM) Form 3 include derivative securities information?

The provided Form 3 data shows an empty derivativeSummary section. That means no derivative positions are detailed here, though any future option or similar holdings would need disclosure in later filings.